Ultra-low temperature epoxy resin nylon hybrid thermosetting powder coating and method for preparing same

Abstract

The invention relates to an ultra-low temperature epoxy resin nylon hybrid thermosetting powder coating, which comprises the following components by weight: 40 to 50 percent of epoxy resin, 15 to 20 percent of nylon, 10 to 14 percent of curing agent, 10 to 18 percent of titanium pigment, 0.8 to 1.2 percent of leveling agent, 0 .5 to 1 percent of defoamer, 1 percent of benzoin, 0.7 to 2 .5 percent pigment, 0.8 to 1 percent of sensitizer, and 1 to 15 percent of filler. A method for preparing the ultra-low temperature epoxy resin nylon hybrid thermosetting powder coating comprises the following steps: after preparing the materials according to the formulation, mixing the materials in a mixer; extruding the well mixed mixture by a twin-screw extruder; cooling sheet materials after the extrusion, crushing and grinding the sheet materials into powder of 200 to 500 meshes in a grinding mill; and packaging the powder for storage. The ultra-low temperature epoxy resin nylon hybrid thermosetting powder coating has the advantages of environmental protection, non-toxicity, no solvent, no discharge of VOC, one-time spray molding, and accordance with the ROSH standard.

Description

technical field [0001] The invention relates to the field of powder coatings, in particular to a thermosetting powder coating mixed with ultra-low temperature epoxy resin and nylon used in the valve industry and a preparation method thereof. Background technique [0002] The use of valves is usually to meet different working environments, especially in relatively harsh conditions, such as valves used in underground and chemical industries are more likely to rust and corrode, so they generally need to be repaired or replaced in a short period of time. The use of coatings in the valve industry is mainly based on paints, which play an anti-corrosion role. However, with the different requirements of products and the continuous strengthening of environmental awareness, functionality, decoration and environmental protection have all been raised to higher requirements. The valve industry began to use powder coatings to replace paints. Powder coatings have formed a consensus with c...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the disadvantages of poor performance and high cost of the existing powder coatings, the purpose of the present invention is to provide an ultra-low temperature epoxy resin nylon mixed thermosetting powder coating with superior performance, reduced energy consumption, low cost of the process and wide application